The development of high-voltage DC power supply systems in more electric aircraft (MEA) pushes the development of traditional mechanical contactor-based secondary power distribution systems towards intelligent solid state power distribution systems. As a core component of intelligent power distribution systems, the solid-state power controller (SSPC) has been widely applied in the secondary power distribution systems of MEA. To protect the main power switches from being destroyed by the voltage spike when interrupting high fault current, Transient Voltage Suppressors (TVS) is normally connected in parallel with the main switch to absorb the energy stored in the line parasitic inductance during the protection process. Currently, existing research mainly focus on voltage spike mitigation strategy using a single TVS, since TVSs is not recommended to operate in parallel by the manufactures. However, as the power rating of the SSPC increases, a single TVS is not capable of fully absorb the energy stored in the line inductance, and thus may suffer from overheat failure during turning off. To address this issue, this paper proposes a TVS array based voltage spike mitigation circuit, which significantly increases the energy absorption capability of the voltage mitigation circuit through series and parallel connection of TVSs. Finally, a 270V/180A DC SSPC is designed, and the effectiveness of the proposed voltage mitigation strategy is validated.


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    Title :

    A TVS Array based Transient Voltage Mitigation Strategy for High Power SSPC


    Contributors:
    Zhao, Xin (author) / Xu, Chuanyou (author) / Chen, Xiliang (author) / Li, Xiangke (author) / Wu, Xiaohua (author)


    Publication date :

    2024-10-10


    Size :

    471460 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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